admin > order.php is not sending emails (using Google Checkout and COWOA)

When someone makes an order the email confirmation works fine.
so does the tell a friend.

But when i update an order no matter which radio button is checked,
no matter if "Append Comments" is checked or not. i get the open padlock and it is indeed viable and does not send emails.

I run

Zen Cart 1.3.9h
Database Patch Level: 1.3.9h

I have several sites with the same problem - any help would be greatly appreciated

PS if needed i will create a demo website for testing

Lots more info would be helpful. PHP & MySql versions? Mods? Was this a sudden occurrence?

Zen Cart 1.3.9h
Database Patch Level: 1.3.9h fresh installation

addons: google checkout, paid easy populate, image handler2, seo urls, COWOA, Wish list, MySQL Database Backup,

Server Host: ###############
Database Host: localhost (127.0.0.1)
Server OS: Linux 2.6.18-194.26.1.el5
Database: MySQL 5.0.92-community
Server Date: 06/23/2011 13:56:03
Database Date: 06/23/2011 13:56:03

Server Up Time: 13:56:03 up 46 days, 2:21, 0 users, load average: 0.00, 0.00, 0.00
HTTP Server: Apache/2.0.63 (Unix)
mod_ssl/2.0.63 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
PHP Version: 5.3.6 (Zend: 2.3.0)
PHP Memory Limit: 32M
PHP Safe Mode: Off
PHP File Uploads: On
Max Size: 2M
POST Max Size: 8M
Database Data Size: 421 kB
Database Index Size: 452 kB

Do the mods match on all affected sites?
Look for the common factors and start turning them off to see which might be causing this.
My vote's for any but EP

i'm testing now a clean install w/o all addons

shows fine for a new install

Its the combination of the 2 addons COWOA and Google checkout

I'm working now to combine the 2 order.php and not mess up the email features (i got it to work fine w/o the email stuff)

did any one actually made it work?

I kinda suspected those were butting heads.

Might want to winmerge the two to see which files are fighting with the site. I wager you'll find both using a couple of common files.

yah! it's admin/order.php
I'm stuck on it for some time now,
I hope to combine the 2